<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Title</title>
  <!-- 引入样式 -->
  <link href="//cdn.bootcss.com/element-ui/1.2.4/theme-default/index.css" rel="stylesheet">
</head>
<body>


<!-- 先引入 Vue -->
<script src="//cdn.bootcss.com/vue/2.2.2/vue.min.js"></script>
<!-- 引入组件库 -->
<script src="//cdn.bootcss.com/element-ui/1.2.4/index.js"></script>


<div id="app">
  <el-row class="tac">
    <el-col :span="8">
      <h5>带 icon</h5>
      <el-menu default-active="2" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose">
        <el-submenu index="1">
          <template slot="title"><i class="el-icon-message"></i>导航一</template>
          <el-menu-item-group>
            <template slot="title">分组一</template>
            <el-menu-item index="1-1">选项1</el-menu-item>
            <el-menu-item index="1-2">选项2</el-menu-item>
          </el-menu-item-group>
          <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
          </el-menu-item-group>
          <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项1</el-menu-item>
          </el-submenu>
        </el-submenu>
        <el-menu-item index="2"><i class="el-icon-menu"></i>导航二</el-menu-item>
        <el-menu-item index="3"><i class="el-icon-setting"></i>导航三</el-menu-item>
      </el-menu>
    </el-col>
    <el-col :span="8">
      <h5>不带 icon</h5>
      <el-menu default-active="2" class="el-menu-vertical-demo" @open="handleOpen" @close="handleClose" theme="dark">
        <el-submenu index="1">
          <template slot="title">导航一</template>
          <el-menu-item-group title="分组一">
            <el-menu-item index="1-1">选项1</el-menu-item>
            <el-menu-item index="1-2">选项2</el-menu-item>
          </el-menu-item-group>
          <el-menu-item-group title="分组2">
            <el-menu-item index="1-3">选项3</el-menu-item>
          </el-menu-item-group>
          <el-submenu index="1-4">
            <template slot="title">选项4</template>
            <el-menu-item index="1-4-1">选项1</el-menu-item>
          </el-submenu>
        </el-submenu>
        <el-menu-item index="2">导航二</el-menu-item>
        <el-menu-item index="3">导航三</el-menu-item>
      </el-menu>
    </el-col>
    <el-col :span="8">
      <h5>分组</h5>
      <el-menu mode="vertical" default-active="1" class="el-menu-vertical-demo">
        <el-menu-item-group title="分组一">
          <el-menu-item index="1"><i class="el-icon-message"></i>导航一</el-menu-item>
          <el-menu-item index="2"><i class="el-icon-message"></i>导航二</el-menu-item>
        </el-menu-item-group>
        <el-menu-item-group title="分组二">
          <el-menu-item index="3"><i class="el-icon-message"></i>导航三</el-menu-item>
          <el-menu-item index="4"><i class="el-icon-message"></i>导航四</el-menu-item>
        </el-menu-item-group>
      </el-menu>
    </el-col>
  </el-row>
</div>


<script>
  var Main = {
    methods: {
      handleOpen(key, keyPath) {
        console.log(key, keyPath);
      },
      handleClose(key, keyPath) {
        console.log(key, keyPath);
      }
    }
  }
  var Ctor = Vue.extend(Main)
  new Ctor().$mount('#app')
</script>
</body>
</html>
